#!/bin/bash
#   user can keyin filename to touch 3 new file

# 输入文件名，取得fileuser变量
echo -e "I will use 'touch' command to create 3 files"
read -p "Please input the filename what you want:" fileuser

# 分析是否设定
filename=${fileuser:-"filename"}

# 获得文件名
date1=`date --date='2 days ago' +%Y%m%d`
date2=`date --date='1 days ago' +%Y%m%d`
date3=`date +%Y%m%d`
file1="$filename""$date1"
file2="$filename""$date2"
file3="$filename""$date3"

#建立文件
touch $file1
touch $file2
touch $file3
